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set global aria_log_file_size=4294959104; drop database if exists mysqltest; create database mysqltest; connect admin, localhost, root,,mysqltest,,; connection default; use mysqltest; * TEST of recovery with blobs connection default; connection admin; * shut down mysqld, removed logs, restarted it connection default; create table t1 (a int, b longtext) engine=aria table_checksum=1; connection admin; * copied t1 for feeding_recovery connection default; insert into t1 values (1,"123456789012345678901234567890"),(2,"09876543210987654321"); connection admin; flush table t1; * copied t1 for comparison connection default; lock table t1 write; update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); update t1 set b=CONCAT(b,b); select a,length(b) from t1; a length(b) 1 31457280 2 20971520 update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); update t1 set b=mid(b,1,length(b)/2); select a,length(b) from t1; a length(b) 1 8 2 5 connection admin; SET SESSION debug_dbug="+d,maria_flush_whole_log,maria_crash"; * crashing mysqld intentionally set global aria_checkpoint_interval=1; ERROR HY000: Lost connection to server during query * copied t1 back for feeding_recovery * recovery happens check table t1 extended; Table Op Msg_type Msg_text mysqltest.t1 check status OK * testing that checksum after recovery is as expected Checksum-check ok connection default; use mysqltest; drop table t1; drop database mysqltest_for_feeding_recovery; drop database mysqltest_for_comparison; drop database mysqltest;